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    <title>第三题</title>
</head>

<body>
    <script>
        function getArray() {
            let arr = ["鹿晗", "王俊凯", "蔡徐坤", "彭于晏", "周杰伦", "刘德华", "赵本山"];
            let arr1 = []
            for (let i = 0; i < 4; i++) {
                let num = Math.floor(Math.random() * arr.length)
                arr1[i] = arr[num]
                arr.splice(num, 1)
            }
            console.log(arr1)
        }
        getArray()
    </script>
</body>

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